/**
 * Modern CSS Reset Tweaks
 * ==================================================
 * A collection of modern CSS reset and normalization styles
 * to ensure consistent behavior across browsers, OS and devices.
 */
 /* 基本设置 */
html {
  font-size: 16px; /* 定义1rem为16px */
}

body {
  margin: 0;
  padding: 0;
  font-family: Microsoft YaHei, Arial, sans-serif;
  background-color: #f4f4f4;
}

/* Ensure consistent font resizing on mobile devices */
html {
  -webkit-text-size-adjust: 100%;

  &:focus-within {
    scroll-behavior: smooth;
  }
}

/* Basic body setup for layout and text rendering optimization */
body {
  text-size-adjust: 100%;
  position: relative;

  width: 100%;
  min-height: 100vh;

  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeSpeed;
}


/* Apply box-sizing globally for consistent element sizing */
*,
::after,
::before {
  box-sizing: border-box;
}


/* Style unclassed links for better accessibility */
a:not([class]) {
  text-decoration-skip-ink: auto;
}


/**
 * CSS Reset Tweaks
 * Based on Eric Meyer's CSS Reset v2.0-modified (public domain)
 * URL: http://meyerweb.com/eric/tools/css/reset/
 */

a,
abbr,
acronym,
address,
applet,
article,
aside,
audio,
b,
big,
blockquote,
body,
br,
button,
canvas,
caption,
center,
cite,
code,
col,
colgroup,
data,
datalist,
dd,
del,
details,
dfn,
div,
dl,
dt,
em,
embed,
fieldset,
figcaption,
figure,
footer,
form,
h1,
h2,
h3,
h4,
h5,
h6,
head,
header,
hgroup,
hr,
html,
i,
iframe,
img,
input,
ins,
kbd,
label,
legend,
li,
link,
main,
map,
mark,
menu,
meta,
meter,
nav,
noscript,
object,
ol,
optgroup,
option,
output,
p,
param,
picture,
pre,
progress,
q,
rb,
rp,
rt,
rtc,
ruby,
s,
samp,
script,
section,
select,
small,
source,
span,
strong,
style,
svg,
sub,
summary,
sup,
table,
tbody,
td,
template,
textarea,
tfoot,
th,
thead,
time,
title,
tr,
track,
tt,
u,
ul,
var,
video,
wbr {
  font-size: 100%;
  font: inherit;
  margin: 0;
  padding: 0;
  border: 0;
  vertical-align: baseline;
}

/* Add focus styles to improve accessibility */
:focus {
  outline: 0;
}

/* Normalize HTML5 elements for older browsers */
article,
aside,
details,
embed,
figcaption,
figure,
footer,
header,
hgroup,
main,
menu,
nav,
object,
section {
  display: block;
}

canvas,
iframe {
  max-width: 100%;
  height: auto;
  display: block
}

/* Remove default list styling */
ol,
ul {
  list-style: none;
}

/* Normalize quote styling */
blockquote,
q {
  quotes: none;

  &:before,
  &:after {
    content: '';
    content: none;
  }
}

/* Reset and normalize form inputs */
input:required,
input {
  box-shadow: none;
}

/* Autofill styling for better compatibility */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
  -webkit-box-shadow: 0 0 0 30px white inset;
}

/* Improve appearance of search inputs */
input[type=search]::-webkit-search-cancel-button,
input[type=search]::-webkit-search-decoration,
input[type=search]::-webkit-search-results-button,
input[type=search]::-webkit-search-results-decoration {
  -webkit-appearance: none;
  -moz-appearance: none;
}

input[type=search] {
  -webkit-appearance: none;
  -moz-appearance: none;
  -webkit-box-sizing: content-box;
  -moz-box-sizing: content-box;
  box-sizing: content-box;
}

textarea {
  overflow: auto;
  vertical-align: top;
  resize: vertical;
}

input {
  &:focus {
    outline: none;
  }
}

video {
  background: #000;
}


/**
 * Prevent modern browsers from displaying `audio` without controls.
 * Remove excess height in iOS 5 devices.
 */
audio:not([controls]) {
  display: none;
  height: 0;
}

/**
 * Address styling not present in IE 7/8/9, Firefox 3, and Safari 4.
 */
[hidden] {
  display: none;
}

/**
 * Improve readability when focused and also mouse hovered in all browsers.
 */
a:active,
a:hover {
  outline: none;
}

/**
 * Make media easier to work with
 */
audio,
img,
picture,
svg,
video {
  max-width: 100%;
  display: inline-block;
  vertical-align: middle;
  height: auto;
}

/**
 * Address Firefox 3+ setting `line-height` on `input` using `!important` in
 * the UA stylesheet.
 */
button,
input {
  line-height: normal;
}

/**
 * Address inconsistent `text-transform` inheritance for `button` and `select`.
 * All other form control elements do not inherit `text-transform` values.
 * Correct `button` style inheritance in Chrome, Safari 5+, and IE 6+.
 * Correct `select` style inheritance in Firefox 4+ and Opera.
 */

button,
select {
  text-transform: none;
}

button,
html input[type="button"],
input[type="reset"],
input[type="submit"] {
  -webkit-appearance: button;
  cursor: pointer;
  border: 0;
  background: transparent;
}

/**
 * Re-set default cursor for disabled elements.
 */
button[disabled],
html input[disabled] {
  cursor: default;
}

/* Additional attribute handling for accessibility */
//[disabled],
//[disabled="true"],
//[aria-disabled="true"] {
//  pointer-events: none;
//}

/**
 * Address box sizing set to content-box in IE 8/9.
 */
input[type="checkbox"],
input[type="radio"] {
  padding: 0;
}

/**
 * 1. Address `appearance` set to `searchfield` in Safari 5 and Chrome.
 * 2. Address `box-sizing` set to `border-box` in Safari 5 and Chrome
 *    (include `-moz` to future-proof).
 */
input[type="search"] {
  -webkit-appearance: textfield;
  -moz-box-sizing: content-box;
  -webkit-box-sizing: content-box;
  box-sizing: content-box;
}

/**
 * Remove inner padding and search cancel button in Safari 5 and Chrome
 * on OS X.
 */
input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}

/**
 * Remove inner padding and border in Firefox 3+.
 */
button::-moz-focus-inner,
input::-moz-focus-inner {
  border: 0;
  padding: 0;
}

button {
  border: 0;
  background: transparent;
}

textarea {
  overflow: auto;
  vertical-align: top;
  resize: vertical;
}

/**
 * Remove most spacing between table cells.
 */
table {
  border-collapse: collapse;
  border-spacing: 0;
  text-indent: 0;
}


/**
 * Based on normalize.css v8.0.1
 * github.com/necolas/normalize.css
 */
hr {
  box-sizing: content-box;
  overflow: visible;
  background: #000;
  border: 0;
  height: 1px;
  line-height: 0;
  margin: 0;
  padding: 0;
  page-break-after: always;
  width: 100%;
}

/**
 * Correct the inheritance and scaling of font size in all browsers.
 */
pre {
  font-family: monospace, monospace;
  font-size: 100%;
}

/**
 * Remove the gray background on active links in IE 10.
 */
a {
  background-color: transparent;
}

/**
 * 1. Remove the bottom border in Chrome 57-
 * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
 */
abbr[title] {
  border-bottom: none;
  text-decoration: none;
}

code,
kbd,
pre,
samp {
  font-family: monospace, monospace;
}

/**
 * Add the correct font size in all browsers.
 */
small {
  font-size: 75%;
}

/**
 * Prevent `sub` and `sup` elements from affecting the line height in
 * all browsers.
 */
sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub {
  bottom: -5px;
}

sup {
  top: -5px;
}

/**
 * 1. Change the font styles in all browsers.
 * 2. Remove the margin in Firefox and Safari.
 */
button,
input,
optgroup,
select,
textarea {
  font-family: inherit;
  font-size: 100%;
  line-height: 1;
  margin: 0;
  padding: 0;
}

/**
 * Show the overflow in IE and Edge.
 */
button,
input {
  /* 1 */
  overflow: visible;
}

/**
 * Remove the inheritance of text transform in Edge, Firefox, and IE.
 */
button,
select {
  /* 1 */
  text-transform: none;
}

/**
 * Correct the inability to style clickable types in iOS and Safari.
 */
button,
[type="button"],
[type="reset"],
[type="submit"] {
  -webkit-appearance: button;
}

/**
 * Remove the inner border and padding in Firefox.
 */
button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
  border-style: none;
  padding: 0;
  outline: 0;
}


legend {
  color: inherit;
  white-space: normal;

  display: block;
  border: 0;
  max-width: 100%;
  width: 100%;
}

fieldset {
  min-width: 0;
}

body:not(:-moz-handler-blocked) fieldset {
  display: block;
}


/**
 * Add the correct vertical alignment in Chrome, Firefox, and Opera.
 */
progress {
  vertical-align: baseline;
}


/**
 * Correct the cursor style of increment and decrement buttons in Chrome.
 */
[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
  height: auto;
}


/**
 * 1. Correct the odd appearance in Chrome and Safari.
 * 2. Correct the outline style in Safari.
 */
[type="search"] {
  -webkit-appearance: textfield;
  /* 1 */
  outline-offset: -2px;
  /* 2 */
}

/**
 * Remove the inner padding in Chrome and Safari on macOS.
 */
[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}

/**
 * 1. Correct the inability to style clickable types in iOS and Safari.
 * 2. Change font properties to `inherit` in Safari.
 */
::-webkit-file-upload-button {
  -webkit-appearance: button;
  /* 1 */
  font: inherit;
  /* 2 */
}

/* Interactive
   ========================================================================== */

/*
 * Add the correct display in all browsers.
 */
summary {
  display: list-item;
}

/* Misc
   ========================================================================== */

template {
  display: none;
}

//@media (max-width: 768px) {
//  html {
//    font-size: calc(100vw / 30); // 适配小屏幕
//    //font-size: calc(100vw / 120); // 适配小屏幕
//  }
//}
//
//@media (max-width: 480px) {
//  html {
//    font-size: calc(100vw / 40); // 适配超小屏幕
//    //font-size: calc(100vw / 150); // 适配超小屏幕
//  }
//}